Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing our new design; and,

FIG. 2 is a front view thereof in a display environment.

The dot-dash broken lines in FIG. 1 showing portions of the display screen define the bounds of the claimed design and form no part of the claimed design. The dash-dash broken lines in FIG. 2 illustrate a display screen and form no part of the claimed design. 

CLAIM We claim, the ornamental design for a display screen or portion thereof with icon, as shown and described. 